# DR vs ResearchMars

The clearest difference is in-app purchases: DR at none against ResearchMars's 9. On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. ResearchMars sells 9 in-app purchases, starting at $9.99 per month. DR asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for DR against 5.0 for ResearchMars. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

## The numbers

| Metric | DR | ResearchMars |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/dr-matary/id6463245575/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/researchmars/id6777788791/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | — |
| Monetization | **Free** | Freemium |
| Size | 250 MB | 53 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ahmed Elshahawy](https://appshunter.io/developer/1596145330) | [Bandar Alghamdi](https://appshunter.io/developer/6777788793) |

## What reviewers say

### DR

[App page](https://appshunter.io/ios/app/dr-matary/id6463245575)

This educational app offers a comprehensive approach to studying surgical medicine. It provides concise summaries of revision materials, review video clips, and interactive tests with solutions to enhance understanding.

**Highlights:** Surgical medicine summaries, Video review clips, Interactive practice tests, Solved test explanations, Revision materials

**In-app purchases:** none


### ResearchMars

[App page](https://appshunter.io/ios/app/researchmars/id6777788791)

This platform streamlines academic research by offering a collaborative workspace for research groups. It facilitates co-writing papers, tracking projects and funding, discovering opportunities, and communicating in real-time. The app supports both English and Arabic languages.

**Highlights:** Group collaboration and management, Real-time paper co-writing, Project milestone tracking, Grant and fellowship discovery, Journal information library, Real-time chat with voice notes, End-to-end funding management

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Researcher Plan | $9.99 | per month |
| Lab Plan | $49.99 | per month |
| Editor Services | $49.99 | per month |
| Researcher Plan | $119.99 | per year |
| Lab Plan | $499.99 | per year |
| Editor Services | $499.99 | per year |
| Group Join Fee | $0.49 | one-time |
| Submission Toolkit | $11.99 | one-time |
| Group Creation Fee | $49.99 | one-time |


## Frequently asked questions

### Is DR free?

DR is free to download, with no in-app purchases.

### Is ResearchMars free?

ResearchMars is free to download, with in-app purchases available.

### Which has better reviews, DR or ResearchMars?

DR and ResearchMars are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.

### Do DR or ResearchMars have ads?

Neither DR nor ResearchMars shows ads.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*